Set Sweep Averaging - Control Byte #118 (76H); Normalize Spectrum Analyzer - Control Byte #130 (82H); Set Spectrum Analyzer Normalization Status - Control Byte #131 (83H); Set / Reset Spectrum Analyzer External Reference - Control Byte #133 (85H) - Anritsu Spectrum Master MS2711D Programming Manual

If markers are set to be noise markers, convert the returned dBm value to dBm/Hz using this formula (only if detection
method is RMS Average):
marker (in dBm/Hz) = marker value (in dBm) – 10 * log10(RBW) – 0.13
Set Sweep Averaging – Control Byte #118 (76h)
Description: Sets the number of sweeps to average. The maximum number is 25. Sending a 1 turns averaging off.
Bytes to Follow: 1 byte
1) Number of sweeps to average (1-25)
Spectrum Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error
238 (EEh) Time Out Error

Normalize Spectrum Analyzer - Control Byte #130 (82h)

Description: Performs Normalization of SPA graph.
Bytes to Follow: 0 bytes
Spectrum Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
238 (EEh) Time Out Error

Set Spectrum Analyzer Normalization Status - Control Byte #131 (83h)

Description: Turns Normalization On/Off.
Bytes to Follow: 1 bytes
1) Normalization Status (00h = Off, 01h = On)
Spectrum Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error
238 (EEh) Time Out Error
Set / Reset Spectrum Analyzer External Reference – Control Byte #133 (85h)
Description: Sets the external reference frequency for the spectrum analyzer in increments of 1 MHz from 2 – 20 MHz. The
frequencies are sent in Hz.
Bytes to Follow: 1 byte if turning the reference OFF, 5 bytes if turning the reference ON
Turn OFF the external reference:
1) 00h - Turn OFF the frequency reference
or
Turn ON the external reference (the reference frequency is also sent):
1) 01h - Turn ON the frequency reference
2) External Reference Frequency (in Hz) (highest byte)
3) External Reference Frequency (in Hz)
4) External Reference Frequency (in Hz)
5) External Reference Frequency (in Hz) (lowest byte)
Spectrum Master PM 85